kW/ton Formula:
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kW per ton is a measure of energy efficiency in cooling systems, representing the amount of electrical power (in kilowatts) required to produce one ton of cooling capacity. Lower values indicate better energy efficiency.
The calculator uses the kW per ton formula:
Where:
Explanation: This ratio quantifies how efficiently a cooling system converts electrical energy into cooling capacity, with lower values indicating better performance.
Details: kW per ton is crucial for evaluating HVAC system efficiency, comparing different cooling systems, optimizing energy consumption, and calculating operational costs in commercial and industrial applications.
Tips: Enter input power in kilowatts (kW) and cooling capacity in tons. Both values must be positive numbers greater than zero for accurate calculation.
Q1: What is a good kW per ton value?
A: Typical values range from 0.5 to 1.5 kW/ton for efficient systems. Lower values indicate better efficiency, with modern high-efficiency systems achieving 0.5-0.8 kW/ton.
Q2: How does kW per ton relate to COP and EER?
A: kW/ton = 3.516 / COP = 12 / EER. These are different ways to express the same energy efficiency relationship.
Q3: Why is kW per ton important in HVAC design?
A: It helps engineers select efficient equipment, estimate operating costs, and meet energy code requirements for building systems.
Q4: What factors affect kW per ton?
A: System design, compressor efficiency, heat exchanger performance, refrigerant type, operating conditions, and maintenance practices all influence kW per ton values.
Q5: Can kW per ton be used for all cooling systems?
A: Yes, it applies to chillers, air conditioners, heat pumps, and other mechanical cooling systems, providing a standardized efficiency comparison metric.